Haier H2SM-14HC03/R2, H2SM-18HC03/R2 Schematic

Domestic Air Conditioner

SERVICE MANUAL

Models :

H2SM-14HC03/R2

H2SM-18HC03/R2

Features

Comfortable:wide-angle airflow

Health air purifying

Quiet operation

Engergy efficient

Wide variety of functions

Serial Number:

Versio n:00.00

Edition: 2005-3-25

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

Content

1.Description of product model coding and series introduction

2.Specifications

3.Curves of performance

4.Description,net dimensions and functions of main components and accessories

5. Brief introduction to electrical control functions

6. Abnormity diagnose

7. Wiring diagram

8. Circuit diagram

9.Trouble shooting

10. Refrigerating cycle diagram

11. Noise level test chart and air velocity distribution 12. Installationmanual

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

Description of product model coding and series introduction

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

A. Description of coding rules of unit model

1

2

3

4

5

6

7

8

9

10

The type of power supply

Developing sequence

C-cooling only

Function code H-heat pump e-electric aided heating

numbers based on thousand unit The structure code of indoor & outdoor unit

The quantity of the indoor unit is two

H-Abbreviation of Haier

Examples:

H2SM-18HB03/R2,It represents wall-mounted multi-type split type room air conditioner.The cooling capacity is 18000BTU/h,and the power supply is 220-230V/50Hz,”B” means the improvement

B.Standard Situation/Conditions

	No.	Operating condition	indoor air status			outdoor air status
			DBOC		WBOC	DBOC	WBOC
1		Norminal cooling	27OC		19OC	35OC	24OC
	2	Norminal heating	20OC		15OC	7OC	6OC
3		Norminal electrical	---		---	---	---
		heating

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

C.Series brief introduction

1.comfortable:wide-angle airflow

The vertical dual-flap and horizontal wide-angle louvers ensure the cool(warm air reaches every corner of the room.

2.Health air purifying and negative ion function

An air purifying filter with deodorizing and disinfecting functions keeps the air clean and users healthy.The negative ion generator can produce the negative ion that make the air fresher and cleaner.

3.Quiet operation

Fan With Random-pitched Blades.

Random-pitched blades help reduce operating noise while maintaining a high airflow rate.

2.Engergy efficient

The design of inner-grooved copper tube greatly increases the refrigerant contact area and the efficiency of cooling/heating functions.

5.Convenience

Auto restart and washable panel:

The grille can be removed easily and washed when necessary.Any series have the function then even if the power falls when the unit is operating unit will automatically return to the operating settings in use before the power failure when power is restored.

6.Wide variety of functions 24-Hour Timer:

24-hour timer allows users to select the exact time they would like the air conditioner to turn on and to turn off.Timers on previous models operation based on the number of hours of desired operation.

7.Night-set models

When the air conditioner is operationg on the timer-off circuit.The preset room temperature gradually rises(going down in heating)before the unit stops as shown delow.Users can sleep comfortably without sudden change in temperature.

8.Program”dry”

This function automatically reduces the level of humidity while maintaining the preset indoor temperature.

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

Specifications

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

CURVES OF PERFORMANCE

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

	Performance Curve		Return Gas Temperature	35	C
	Model	39A173A	Subcooling	8.3 C
		220-230V / 50Hz / 1PH
	Power Supply
				35 C
	Run Capacitor	25 μF / 370 VAC	Ambient Temperature

Cond. Temperature

	2500																				45 OC
	2330																				O
(Kcal/Hr)	2160																				50OC
	1990																				55 C
																					O
	1820																				60 C
	1650
Capacity
	1480
	1310
	1140
	970
	800
	-8	-7	-6	-5	-4	-3	-2	-1	0	1	2	3	4	5	6	7	8	9	10	11	12

	900
	865																				45 OC
(Watts)	830
	795																				50 O C
	760
	725
Power																					55OC
	690
	655																				60OC
	620
	585
	550
	-8	-7	-6	-5	-4	-3	-2	-1	0	1	2	3	4	5	6	7	8	9	10	11	12
	4.00																				O
																					60 C
	3.85
(Amps)	3.70																				55OC
	3.55
	3.40
	3.25																				50 O C
Current
	3.10
	2.95																				O
	2.80																				45 C
	2.65
	2.50
	-8	-7	-6	-5	-4	-3	-2	-1	0	1	2	3	4	5	6	7	8	9	10	11	12
	55.0																				45 OC
	51.5																				50OOC
	48.0																				55 C
(Kg/Hr)	44.5																				60OC
	41.0
	37.5
Flow	34.0
	30.5
	27.0
	23.5
	20.0
	-8	-7	-6	-5	-4	-3	-2	-1	0	1	2	3	4	5	6	7	8	9	10	11	12

Evaporating Temperature( C)

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

	Performance Curve		Return Gas Temperature	35	C
	Model	44A233A	Subcooling	8.3	C
		220-230V / 50Hz / 1PH
	Power Supply
				35	C
	Run Capacitor	40 uF / 370 VAC	Ambient Temperature

Cond.Temperature

	3500													45 C
	3300
(Kcal/Hr)														50 C
	3100
														55 C
	2900
														60 C
	2700
	2500
Capacity
	2300
	2100
	1900
	1700
	1500
	- 1	0	1	2	3	4	5	6	7	8	9	10	11	12

	1150
	1110													60 C
(Watts)	1070
	1030													55 C
	990
	950
Power														50 C
	910
	870													45 C
	830
	790
	750
	- 1	0	1	2	3	4	5	6	7	8	9	10	11	12
	5.3													60 C
	5.1
(Amps)	4.9
	4.7													55 C
	4.5
	4.3													50 C
Current
	4.1
	3.9													45 C
	3.7
	3.5
	3.3
	- 1	0	1	2	3	4	5	6	7	8	9	10	11	12
	70.0													45 C
														50 C
	66.8
														55 C
	63.6
(Kg/Hr)														60 C
	60.4
	57.2
	54.0
Flow	50.8
	47.6
	44.4
	41.2
	38.0
	- 1	0	1	2	3	4	5	6	7	8	9	10	11	12

Evaporating Temperature( C )

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

DESCRIPTION, DIMENSION

& FUNCTION OF MAIN

COMPONENTS AND ACCESSORIES

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

Description and function of main components and accessories

Domestic Air Conditioner	Model: H2SM-14HC03/R2
	H2SM-18HC03/R2

Net dimensions for indoor unit

795

182

265

Net dimensions for outdoor unit

295

680

	319.5	583
		815
	352
		869

				Domestic Air Conditioner	Model: H2SM-14HC03/R2
					H2SM-18HC03/R2

BRIEF INTRODUCTION TO

ELECTRICAL CONTROL FUNCTION

14 23

one. Temperature Control Function

In temperature control function, the operation frequency of outdoor unit is determined based on room temperature and the set temperature.

In automatic fan speed mode, indoor fan is controlled based on the need of temperature control In heating mode, indoor fan is controlled based on the temperature of coil.

1-1-1.Specification of Indoor Ambient Temperature Sensor

In case of short circuit or open circuit, indicator lamp alarms and indoor fan stops. When normal condition is resumed, fan will automatically restart and operate normally.

Short Circuit:

Temperature: over 126oC, Hexadecimal System: over F8H, Resistance: below 0.65K,Voltage: over 4.85V. Normal Temperature:

Temperature: 25 oC, Hexadecimal System: 40H, Resistance: 23K, Voltage: 2.33V. Open Circuit:

Temperature: below -31 oC, Hexadecimal System: below 08H, Resistance: below 620K Voltage: below 0.15V.

B Parameter = 4200 R (25 oC) = 23K

1-1-2 Specification of Indoor Coil Temperature Sensor B Constant Number = 3700 R (25 oC) = 10K

1-1-3 When heating operation starts and indoor fan stops or when within 30s of indoor fan starts after heating operation starts, the resistant of indoor ambient temperature sensor is ignored. (to avoid the impact of heat exchanger temperature over it.)

When forced operation ends after start-up, temperature zone control begins. 1-3. Set Temperature Correction

Set temperature is corrected according to unit model, operation mode, fan speed and whether it is in power operation.

Fan speed correction is available only during low and mid heating operation.

1-4. Temperature Zone Control

1-4-1.Error

Temperature zone error is calculated as per the following formula:

In Heating Mode: E = (Remote Control Set Temperature + Correction Value) – Indoor Temperature In Cooling & Dehumidification Mode: E = Indoor Temperature - (Remote Control Set Temperature + Correction Value)

1-4-2 Compressor Shutdown
E is negative and |E|> T
		Heating		Cooling
	T	TCHAHL	0.67	TCHACL		0.33
	After change of T	TCHAHH	0.67	TCHACH		1
	T Change Condition	When operation starts E			3.0	,

Compressor shuts down after continuous testing for 120s,

At the beginning of operation, with reference to the conditions given in above table, it operates based on the parameters after change of T until compressor shuts down for the first time. In the time period between compressor shutdown and restart, it operates based on T. (except in dehumidification mode) Compressor starts at the beginning of operation or upon switch of operation mode (except standby ends) or when E (error) > - T.

When compressor is operating, remote control set temperature is changing towards the direction of compressor shutdown and when it is below – T, compressor will shut down.

2-4-3. Compressor Operation

Compressor restarts when E (error) > - T+0.67 and when 3 mins standby is over.

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				Domestic Air Conditioner	Model: H2SM-14HC03/R2
					H2SM-18HC03/R2

two. Indoor Fan Control

2-1. Heating
2-1-1. Warm Start
Two. Cold Air Control in Heating Mode
Heat Exchange Temperature:
THHOT3
37.0
THHOT2
35.2
THHOT1
25.2	4mins
THHOTR
16

Stop SLO	LO	Set	LO	SLO Stop
Conduct indoor fan control as per the above diagram and the heat exchange temperature.
1. Judge wind speed when heat exchange temperature is rising:
Fan is at super low level when heat exchange temperature is below 35.2			.	Fan will stop upon

initially energized into heating mode or after defrosting, or when heat exchange temperature is lower

than 25.2 . Fan is at super low level when temperature is higher than 25.2		but lower than 35.2
. ;
Fan is at low level when heat exchange temperature is between 35.2	and 37	;
Fan will operate as per setting when heat exchange temperature is above 37 .
2. Judge wind speed when heat exchange temperature is falling:
Fan is at low level when heat exchange temperature is below 35.2	but above 25.2 ;

Fan is at super low level and will maintain the mode when heat exchange temperature is lower than

25.2Fan is at super low level upon initially energized into heating mode or after defrosting, or

heat exchange temperature is lower than 25.2 but higher than 16 ; Fan will stop when heat exchange temperature falls below 16 .

3.Wind speed is at super low or low level when heat exchange temperature is rising. If heat exchange temperature fails to enter the next temperature zone after 4 mins while wind speed rises to the next stage, it is necessary to maintain the set wind speed for 4 mins before it is adjusted based on heat exchange temperature.

4.When heat exchange temperature is falling, wind speed will return to set speed if low wind level is maintained for over 4 mins.

2-1-2. 3 mins standby period when compressor shutdown.

1. When compressor shuts down temperature sensor is off , airflow is low for the initial 20s then reduced to super low (When in silent operation, it is SSLO);

2. Wind is maintained at super low level in the standby period in heating mode Compressor stops during mode switch. .

3. Remote control shut down and stop indoor fan.

2-1-3. Compressor Restart

When warm start, airflow is at remote control set level.

When in automatic airflow mode, airflow is determined based on temperature. Refers to temperature zone control functions.

2-2 Cooling

Airflow is different when airflow is set at high, mid and low level.

When in automatic airflow mode, airflow is determined as per temperature. Refers to temperature control functions.

2-3. Dehumidification

2-3-1. Compressor is off and is in 3 mins standby.

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